APA استشهاد

Krishan Gopal. (2000). Digital libraries in electronic information era. Authors Press Publishers.

استشهاد بنمط شيكاغو

Krishan Gopal. Digital Libraries in Electronic Information Era. Delhi: Authors Press Publishers, 2000.

MLA استشهاد

Krishan Gopal. Digital Libraries in Electronic Information Era. Authors Press Publishers, 2000.